For students without insurance or on MediCal, the CommuniCare Salud Clinic has free immunizations. You can make an appointment or drop by the walk-in T-dap clinic on Tuesdays and Fridays, 1-5 pm. Salud Clinic is located at 500 Jefferson Blvd #180, West Sacramento, CA 95605. The phone number is 916-403-2900.